<div>Hi David,</div> <div> </div> <div>I'm no biologist, so this answer may turn out worthless. But, I assume that the transmission of signals is the major constituent of human cognition. That transmission cannot occur without the neuron "firing" electrically. During the periods when a neuron is not firing (not transmitting signals) I doubt that it contributes to cognition any more so than a liver cell (to use John's example) would. So the firing rate seems to be the critical and limiting factor.</div> <div> </div> <div>Best Wishes,</div> <div> </div> <div>Jeffrey Herrlich <BR><BR><B><I>David Masten <dmasten@piratelabs.org></I></B> wrote:</div> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">On Wed, 2006-04-19 at 14:45 -0700, A B wrote:<BR>> 1 Second / 1000 Firings / 100 Billion Neurons = ...<BR>> = ~ 10 ^ -14 Second = span in which not a single neuron
anywhere in<BR>> the brain is <BR>> firing.<BR>> <BR>> 10 ^ -14 Second / 10 ^ -43 Second (one Planck Interval) =...<BR>> = *At Least* ~ 10 ^ 29 Planck Intervals between the firings of any two<BR>> (random) <BR>> neurons.<BR><BR>Questions:<BR><BR>What is the duration of a firing?<BR>Shouldn't the processes leading up to and away from a firing count as<BR>part of the "on" time?<BR><BR>Thanks,<BR>Dave<BR>_______________________________________________<BR>extropy-chat mailing list<BR>extropy-chat@lists.extropy.org<BR>http://lists.extropy.org/mailman/listinfo.cgi/extropy-chat<BR></BLOCKQUOTE><BR><p>
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